| 000 | 00356pam a2200157a 44500 | ||
|---|---|---|---|
| 008 | 230515b1993 xxu||||| |||| 00| 0 eng d | ||
| 020 | _aNULL | ||
| 041 | _aENGL | ||
| 082 | _a620.0042/ AT & T. | ||
| 100 | _aAT & T | ||
| 245 | _aDESIGN TO REDUCE TECHNICAL RISK | ||
| 250 | _aN.D. | ||
| 260 |
_aNULL _bMc. G _c1993 |
||
| 300 | _a752 HB | ||
| 650 | _aNULL | ||
| 999 |
_c632810 _d632810 |
||